Cutting-tool



W. LOSCH.

CUTTING TOOL.

APPLICATION FILED APR.25. 1914.

l 1 95,826 Patentefi Aug. 22, 1916.

2 S HEETSSHEET 2.

Wm {M Qieb 3% I 6130mm WALTER LOSCH, 0F TOPI'ON, PENNSYLVANIA.

CUTTING-TOOL.

Specification of Letters Patent.

Patented Aug. 22, 1916.

Application filed April 25, 1914. Serial No. 834,501.

To all whom it may concern Be it known that I, WALTER LOSCH, citizen ofthe United States, residing at Topton, in the county of Berks and Stateof Pennsylvania, have invented certain new and useful Improvements inCutting-Tools, of which the following is a specification.

My invention relates to improvements in cutting tools, the same beingparticularly adapted for use in connection with a lathe or the like, forcutting and trimming the metal pipes, bars, rods, etc. carried thereby.

As its primary object, the tool contemplates a structure, such in itsnature, as to first firmly grasp and hold the material acted uponagainst radial play, and secondly, to cut or trim the said material asit is turned or moved by the lathe; the cutting operation being effectedthrough manipulation of a suitable lever, so connected to the cuttingblades or knives as to render the latter operative or otherwise asoccasion may demand.

The above and additional objects are accomplished by such means as areillustrated in their preferred embodiment in the accompanying drawings,described in the following specification and then moreparticularlypointed out in the claims which are appended hereto and forma part of this application.

In describing. my invention in detail reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a front elevation of a cutting toolconstructed in accordance with thepresent invention; Fig. 2 is a side elevation, the operating lever beingpartly broken away; Fig. 3 is an enlarged elevation of one of thecutting blades and its support; Fig. 4 is a section on the line 44 ofFig. 3; Fig. 5 is a top plan view of the adjusting lever and itssupport; Fig. 6 is a fragmentary view illustrating the manner in whichthe operating lever is attached to the frame or body of the tool; andFig. 7 is a perspective view of the clamp.

Referring now to the drawings by numerals, 1 designates the frame orbody of the tool, the said frame having an extension 2 integraltherewith, the latter being attachable, in any suitable manner, to thelathe (not shown) in connection with which the tool is adapted to beused. An extension 3 is integral with the tool frame 1 at its uppermostend, the said extension in turn being provided with a semi-circularplate like enlargement 1 over the top face of which an adjusting lever 5is operated, said adjusting lever being mounted upon a suitable shaft 6extending vertically through the extension 3, said shaft beingrotatable, through movement of said lever to operate a pinion 7 mountedthereupon in a manner apparent upon reference to Fig. 2.

As a means whereby the adjusting lever 5 may be locked in the desiredadjusted position, I provide a suitable clamp 8 enlarged at one end asindicated at 9, the enlargement being engageable with the under face ofthe lever 5 and the clamp proper being engageable with the under face ofthe plate like enlargement 4 of the frame. A bolt 10 is screw threadedinto the said clamp 8, the lever 5, and an auxiliary lever 11, thelatter being rotatable in a plane above the said lever 5 to move thesaid clamp into and out of firm frictional engagement with theenlargement 1, the purpose of which is obvious.

An arm 12 in the form of a segment and having teeth 13 is mounted foroscillation about a pivot pin or bolt 14 carried by the frame, said armbeing integral with a sleeve or collar 15 through which the pin extends,the said sleeve serving as a means whereby a second segmental arm 16also provided with teeth 17 is held in spaced relation to the arm 12aforesaid, the said last mentioned arm being also oscillatable upon thepin 14, the latter extending therethrough. Gripping jaws 18 and 19 areintegral respectively with the sleeve 15 and the arm 16, said jaws beingmovable toward and from each other through actuation of pinion 7. Saidpinion 7 being in mesh with the teeth 13 of arm 12 and the teeth 17 ofarm 16, it is apparent that the said two jaws 18 and 19. will beoscillated about the pivot pin 14 and made to move in a man 'nernecessary to operation through movement of lever 5, the latter beingmounted upon the shaft 3 to which the pinion 7 is secured. The saidframe 1 at its lowermost end is laterally extended as at 20, the saidextension being shaped to receive a complemental tool holding device 21,said device being angularly grooved to receive a blade or knife 22. Asuitable locking pin 23 is carried by said device 21 to lock the bladeimmovable relatively to the device yet slidable relatively to theextension of the frame.

Upon the opposite side of the tool frame 1 from that upon which theextension 20 is formed, the said frame is laterally extended as at 24,the said extension 24 being also formed to receive a tool holding device25, so arranged relatively to the extension 2 1, as to clamp within asecond angular groove a. second blade or knife 26. A pin 27 is operablewithin said block to lock the blade 26 immovable relatively thereto.Plates 28 are secured to each of the extensions 20 and 24: to formguides for the tool holding devices 21 and 25 whereby the said deviceswith the blades 22 and 26 attached thereto may be slid relatively to theframe in a manner tobe hereinafter fully described.

As a means whereby the blades 22 and 26 may be moved relatively to eachother, I provide an operating lever 29, said lever carrying at. itslowermost end a pin 30 operating within an opening therefor in thedevice 21. At a point adjacent the said pin 30 the lever 29 isfulcrumed, said fulcrum .being effected by means of a pin 31 passingthrough the said lever, the pin being carried by a link 32 pivoted as at33 to the frame 1 in a manner apparent upon reference to Fig. 6. Abovethe fulcrum point formed by pin 81, operating lever 29 has attachedthereto an arm 34:, said arm being pivoted as at 35 to device 25 at oneend and as at 36 to the lever, this arrangement, upon operation of thesaid lever, causing the said two devices and the blades carried therebyto be moved relatively to each other in a cutting operation.

Operation of the tool is as follows: The extension 2 is so attached tothe lathe machine as to position the center of the cutting tool, asindicated at A in the center line of the lathe, the metal rod or tubeacted upon being then clamped between the jaws 18 and 19 of the cuttingtool, the latter holding the said rod or pipe incapable of radial play.Said rod or bar having been set, and the jaws 18 and 19 looked throughoperation of auxiliary lever 11 and adjusting lever 5, operating lever29 is depressed, causing blades 22 and 26 to move toward each other. Asthe said pipe or bar is rotated by the lathe, the cutting edges of theblades 22 and 26 bite into and cut the said material and, by

continued pressure upon operating lever 29 cause the said blades to moveinto the position indicated in Fig. 1, in which event, the materialacted upon is severed or cut as desired.

From the foregoing, taken in connection with the accompanying drawingsit is apparent that operation of lever 29 will slide tool holdingdevices 21 and 25 within their respective supports and relatively toeach other; that the material acted upon is held fast, or againstmovement other than rotary, by clamping jaws 18 and 19; and thatmaterials varying in size may be acted upon by the cutting tool,adjustment of the various parts of the tool being effected in a mannerapparent upon reference to the drawings.

In reduction to practice, I have found that the form of my invention,illustrated in the drawings and referred to in the above description, asthe preferred embodiment, is

what I claim as new and desire to secure by 7 Letters Patent, is

1. In a cutting tool, blades'movable into and out of engaging proximityin a cutting operation, and means oscillatable from a fixed axis to holdthe material acted on for rotation and against radial play.

2. In a cutting tool, relatively movable jaws having a fixed axis ofoscillation, each jaw being provided with a gear sector, an engagingpinion turnable to move said jaws during adjustment, said jawsbeingengageable with the material to be cut for holding said materialagainst radial play, means to lock the adjusting means against movementsubsequent to adjustment, and cutting means operable in proximity to thementioned jaws.

8. In a cutting tool, a frame, relatively movable jaws having a fixedaxis of oscillation upon the frame, each jaw being provided with a gearsector and engaging pinion turnable to move said jaws with the pinion, asemicircular guiding plate on the frame, a clamp member mounted on thelever and engageable upon the plate to secure the lever and consequentlythe jaws against movement subsequent to adjustment, and cutting meansoperable in proximity to the said jaws.

4:. In a cutting tool, a frame, jaws mounted for oscillation upon theframe and movable relatively to engage the work therebetween each havinga sector, a pinion engaging both sectors to oscillate the jaws, asemi-circular guiding plate formed on the frame, a lever movable withthe pinion, a clamp on the lever for engaging the plate to retain saidlever in its adjusted position, and cutting means operable in proximityto the said jaws.

5. A cutting tool including a frame, relatively movable jaws mountedthereon for lightly engaging the work, relatively movable holdingdevices provided with cutting tools and adapted to move the tools acrossthe jaw space, a lever fulcrumed to the frame, and means connecting thelever at opposite sides of its fulcrum with each of the devices.

6. A cutting tool including a frame, relatively movable jaws mountedthereon adapted to lightly engage the work, relatively movable toolholding devices mounted in the frame, provided with tools and adapted tomove said tools diametrically across the jaw space, a lever fulcrumed onthe frame, and links forming a connection between the lever at oppositesides of its fulcrum and to each of the devices.

7. A cutting tool including a frame, relatively movable jaws movablethereon for lightly engaging the work, tool holding devices mounted onthe frame, having cutting tools adapted to move the points thereofdiametrically across the jaw space and to mutually engage at the centralaxis of said jaw space, a lever fulcrumed to the frame, and linksconnecting the lever at opposite sides of its fulcrum to each of thedevices for equally distributing the power applied to said devices.

8. A cutting tool including a frame, provided with oppositely disposedextensions,

with guides provided on the extensions, jaws mounted on the frame andadapted to lightly engage the work disposable between the extensions,tool holding devices movable in the guides provided with tools andadapted by said movement to direct the tools diametrically across thejaw space, a lever fulcrumed on the frame, and links pivotallyconnecting the lever at opposite sides of the fulcrum thereof to each ofthe devices.

9. A cutting tool including a frame provided with oppositely disposedspaced extensions, guides on the extensions, tool holding devicesmovable in the guides in parallel directions, or out of alinement, toolsadjustably mounted in the devices and adapted to be moved across the jawspace to come to rest with the points of said tools in engagement at theaxis of the jaw space, the tools being in alinement at that time, alever fulcrumed on the frame, and links pivotally connecting oppositesides of the lever with each of the devices.

In testimony whereof I afiix my signature in presence of two witnesses.

WALTER LOSCH.

Witnesses:

GEO. 'F. KNAUss, HARVEY A. L. HAAS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. G.

